Automatic signal-operator.



E. R. GILL.

AUTOMATIC SIGNAL OPERATOR. APPLICATION FILED AUG. 4. H1909. IIIzNEwEDAus. 24.1914.

1,150,1 10. y PfIIenIeaAug. 17,1915.A

5 HEEISSHEET 1. f Iz I y l A n i,

E. R'. GILL. AUTOMATIC SIGNAL OPERATOR. y APPLICATION FILED AUG-4,4909.RENEWED AUGK 24. I9I4. l 1,1 5G, l l 0, Patented Aug. 17, 1915.

5 SHEETS-SHEET 2.

E. R. GILL.

AUTOMATIC SIGNAL OPERATOR.

APPLICATION FILED Aue.4. 1909. RENEwED Aue. 24. 1914.

1,1 50,1 1 O. Patented Aug. 17, 1915.

5 SHEETS-SHEET 3.

E. R. GILL.

AUTOMATIC SIGNAL OPERATOR. APPLICATION FILED AuG.4 |909. IIENEwED Aus.24. I9I4.

E. RqelLL. AUTOMATIC SIGNAL OPERATOR.

APPLICATION FILED AUG. 4. |909. RENEWEKD AUG. 24. |914.

1,150; 10. Patented Aug. 1 7, 1915.

5 SHEETS-SHEET 5.

IIIIIIIIII'I EDWIN R. GILL, OF YONKERS, NEW YORK, ASSIGNOR, BY MESNEASSIGNMENTS, Tb HALL SWITCH & SIGNAL COMPANY, A CORPORATION 0F MAINE.

AUTOMATIC SIGNAL-OPERATOR.

,Specification of Letters Patent.

Appiication med August 4, 1309, serial no. 511,259. Renewed segua 24,1914. serial No. 858,343.

vTo all 'wh-0m it may/concern Be it known that I, EDWIN R. UILL, acitizen of the4 United States, residing in the city of Yonkers, countyof Westchester, and State of New York, have invented a certain new andusefullmprov'ement in Automatic Signal-Operators, of which the followingis e Y plane 2-2 1n Fig. l, Fig. 3 'is a perspective a specification. eThe present invention lation to automatic means for operating high speedselective signals for telephones, telegraphs andthe like, and it may beused wherever a succession of long and short elecl trical impulses is tobe produced under circumstances permitting permutation ofd the order ofsuch impulses.

Many devices have been whereby a number of signals at diderent pointsmay be selectively operated over a themselves, and among these an entireclass is recognized wherein a movable contact vpiece is impelled forwardrapidly step by step, the mechanism being so arranged that pauses may beproduced after any one step forward, and so that each pause will cause asignal to operate at only one station. By pausing after the appropriateforward step, v the operator is able to select whichever station hepleases 'and to call that station without disturbing any other upon theline. For convenience I shall refer herein to selective signaling meansof this description as high speed signals.

i My present invention is not concerned with the particular constructionof any high speed selective signal and I have not illustrated suchasignal herein, but its object is to supply means whereby merelydepressing appropriate buttons and starting an automatic circuit breakerwill produce a succession of electric impulses on a mainline includingpauses so ordered as to cause those stations corresponding to thebuttons de pressed to be called,'and no others. It is to be understood,however, that my devices may be put to otherv than the above useswithout departing from the scope of my invention.

The present invention relates particularly to certain modifications andimprovements in the apparatus described in my pending y application,Serial No. 458,204, filed October 17th, 19,08, now Patent Number 1,024;444,;patented Apr. 23,1912, wherein certain broader claims are made.

has particular rey hitherto contrivedv single wire without interferenceamong A preferred embodiment of this invention is illustrated in theaccompanying- View of the escapement and the coperating armature ofthearrester, Fig.` a is a section of the keyboard and switches, taken onthe plane inFig. 2, Fig. 5 is a view of the preferred freeing device,Fig. 6 is an end elevation of the same, Fig. 7 is a partial elevation ofthe same viewed oppositely to Fig. 5, Figs. 8 and 9 are details of thefreeing device shown on a large scale, and Fig. l0. is a diagram fcircuits of an entire ap paratus.

In my former application above meritioned there is described acombination of the following principal elements: First: A n

called the automatic arrester. Third: MeansV4 for selecting anddetermining the'parti'cular `positlons of the sender at which thearrester becomes operative, called the pause con troller. after anappropriately timed pause, the action of the arrester is discontinuedand the sender is freed, called the freeing device.

My present invention comprises some vor all of these elements, butincludes a certain improvement in the third element or pause controller,wherebyvthe same can be built up of sections which can be simplyassembled side by side in such numbers as may be desirable in any giveninstallation, the automatic restoration of all the keys in each sectionbeing accomplished by" a single agency for each section.

The invention also comprisesA certain changes in the other elements ofthe whole apparatus, whereby they are made practical in combination withthe improved form of apparatus above named.

Referring first to Fig. l0, theA main line upon which are connected allof the selective signals or other devices intended to'receive theimpulses produced is shown at 10, and

Fourth: Automatic means whereby whenever brought together'.

the local relay controlling the main'circuit an insulated Contact piece12 and a movable contact piece 13. This latter, as yshown,"

comprises a spring terminal which is controlled by clockwork, to theframe of which it is electrically connected. These two contacts are soconnected to the battery 14 and the relay 11 as to close themain linecircuit The operating clockwork comprises a main spring 15, which tendslalwa. s to turn the main shaft 16 in the direction indicated by thearrow on the gear'wheel 17 (see Fig. 1). This; wheel is fast on theshaft 16, and, through a train of gears shown in dotted lines, it impelsa coarselL/toothedA wheel 18. The spring terminal 13 c rries alinger1'9, so placedv with relation to the wheel 18 that, as the latter turnswith the arrow shown upon it in Fig. 1, said finger, and the terminal 13with it, are raised by each tooth of the wheel 18 in succession, thusclosing and opening the relay circuit at 12 at regular intervals. Forthe purposes of my complete system,.the wheel 18 should have two moreteeth than the total number of selective signals for which the completeapparatus is designed. I 1

The motion of the clockwork is controlled-- in a well known manner by anescapement 20 comprising an extension 21 for a purpose de'- scribedhereinafter.

The main shaft'l can be turned by a handle 22 and carries with it anarc-shaped stop arm 23 against which a stop pin 24 on the wheel` 18normally bears. In operating the i device, the handle 22 is turnedoppositely to the arrow in Fig. 1, until the stop arm strikes the pin25.. This frees the wheel 18, which turns with the arrow marked on it inFig. 1, and ther movements of the various shafts are so related that,when the wheel 18 has made one revolution, the pin'24 again strikes thestop arm and stops the clockwork.

The frame of the clockwork -is fixed to a metal strip 26 which connects,by the fiat terminal 27 and wire 28, with the battery 14.

The insulated terminal or contact piece 12 is connected by wires 29, 30to one side of the relay 11.

The mechanism and connections thus far described sulice .for producing arapid succession of, electrical impulses on the main line. tivelyoperating the type of signals heretofore mentioned, however, it isnecessary to provide means whereby a long impulse is produced at theproper moment or moments for calling the desired station or stations.The automatic arrester is used for this purpose.

In order to make these useful in selec- In Figs. 1 and 3,Ianelectro-magnet 31.,is

provided which controls a pivotedarr'nj ture 32, normally kept awayfromthemagnet pole by the `springs 33. This armaturecarries a finger 34,so placed that, when the magnet is energized, the tip of said finger Icatches the tip of .the extension 2 1 of the escapement and stops theclockwork. .The means whereby the action of the: arrester is iappropriately timed is termed the pause contr-oller. c v l In theimproved form shown herein, the pause controller comprises a keyboardmade. upl of sectional units, two of which are illus-- trated in Figs..1, 2 and 4. These two units comprise nine selective keys and one Setbutton as indicated clearly in Fig.` 1.l It

so. 'Y

should be here explained that ordinarily only one fset button need beused, whatever the number of sectional units employed for a group ofstations to be called.

As shown in Figs. 2 and 4 each selfsupporting unit is furnished with itsown separate framework 36, which supportsl a row of tilting keys 37,mounted each on the end of a separate revoluble shaft 38. Each shaft isarranged to close a separate spring switch, preferably by means of athimble 39,0f insulating material, against one fiat face of which bearsone of a pair of contact springs 40, 41. These springs are omitted fromFig. 4.

lt will be seen that the shape of the thim! bles 39 is such thatrotation of a shaft 38 will cause a corresponding spring contact 40 tomove towardits appropriate spring 41 until contact is made, closing acircuit for a purpose described hereinafter.

The key marked set is shown at the bottom of Fig. 2, and it will be seenthat the l.

thimble 39 on this key, instead of closing a circuit when turned, asdescribed above, acts, on the contrary, to open a circuit by pressingthe contact spring 42 away from the spi-ing 43. All the springs 4() ineach sectional group are electrically united-as shown in Fig. 2, and, inthat group which includes a set key, the spring 43 is electricallyconnected to all the springs 40. As shown in Fig. 10, a connnon wire 44,unites all the springs 40 in all of the sectional groups or unitsv which-are combined in any station.

As will be seen by inspection of the drawings, all the springs40,`pressing upon the thimbles 39 when tilted, tend to return all thekeys to the normal position shown in the drawings, and consequentlymeans must be v 'provided for holding `the keys in closed cirgroup orunit. Each magnet 46 is provided with a coil of fine wire 47 the ends ofwhich is connected by Wirev 51 with a contact spring 52- near the top ofthe unit, and a losecond spring 53 is adapted to make and break contactwith the spring 52 at the proper time for energizing and denergizing themagnet 46, whereby the armatures 45 are all either held or releasedtogether.

.F or the purpose of operating the switch 52,53, means are suppliedwhich are operative Whether one or more of the -keys in any one unit orgroup are tilted. In the preferred form shown I' use a sliding rod 54extending past all the shafts 38 and carrying an insulated arm `55 uponwhich bears the spring 53, so that when the rod 5 4 is lifted contactwill be made between the springs 52, 53. The rod 54 also carries liftingarms 56 which project over the thimbles 39 and lie normally upon theupper flat surfaces. Owing to this construction, the turning of any onethimble 39 by tilting a key 37 raises the rod 54 and closes the con-Atact at 52, 53. The weight of the rod 54 and the resiliency of thespring 53 act with the tendencies of the springs and 42 to return thekeys to normal.

The line setting means governed by the key marked set are notindispensable to my invention but arepreferably employed, and, whenused, the springs 40 in'all the combined units are normally connected,

through the springs 42, 43, to the ,movable member of the selectingswitch which forms partofthe pause controller, in a manner and for apurpose described hereinafter.

The shaft 57 of the toothed wheel 18 preferably carries the movablemember of the selecting switch. This is a spring arm A58 4arranged sothat its tip passes into the spring-Jaw contacts 59,60 placed in acircle around the shaft 57 as a center; and the arm 58 is so placed thatit touches said contacts at the same time that a corresponding tooth ofthe wheel 18 is acting to close the relay circuit at 12, 13. There isone contact 59 connected electrically to each contact spring 41 in thecombined units, and in addition one contact 60 connected to all thesprings d 40 by the wires 61 and 44 (see Fig. 10).

The wheel 18 hasone tooth corresponding to each spring-jaw contact 59and one for the contact 60.

' The arm 58 normally bears at its opposite end upon va metal ring 62,savewhen the tch 63 insaid ring is reached. The ring 6 u'isjconnectedbythe wire 64`to the spring Y contacts 53 in all theassociated units.

shown in. Fig. 10, the magnet 31 of the pauses produced thereby, afreeing device must be employed, and for'this purpose I refer to use theapparatus shown in Figs. 5

. to 9 and in diagram in Fig. 10.

A Here the casing 7 0 incloses a framework 71 supporting a horizontalshaft 72 carry` ing a ratchet wheel 73 which is normally impelled in thedirectlon of the'arrow in Fig. 7 by the spiral spring 74. Theelectromagnet .7 5 (omitted from Fig. 6) acts through the armature 76,bent spring .77' and wire 78' to operate an impelling lever 79. Animpelling pawl is pivoted to the end of the lever 79 and is so placedthat, whenever energization of the magnet 75 permits the lever 79l tomove downward, said pawl will move the ratchet Wheel 73l one toothforward. When the impelling pawl 80 rises, the retaining pawl 81 on thepivoted arm 82 acts on the teeth of the ratchet 7 3 to prevent return tonormal under the inand its driving parts should be substantially asfollows: Vhen the wheel is at normal and before any call is begun, anyrapid impulses "should produce only aback and forth mo- The inclinationof tion through the space of one tootlLr'lVhen.

'a call is to be begun, a pause during an impulse (the magnet 7 5 beingenergized) should prepare the wheel for action. Thereafter everyimpulse, whether including a pause or not, should cause the wheel tomove forward one step without backward move'- ment, and this shouldcontinue until as many steps have been taken as there are selectivecalls in the particular system to be operated, after which the wheelshould return to its original or normal position, in readiness for a newcomplete'operation.

Fig. 8 shows the normal position-fof the wheel 73 and lever-82. In thisposition the lever, 82 is supported in anielevated position with thepawl 81fout of engagement,.due.to

the fact that the catch 84 rests on the hook .85` which is fixed to therevolutie shaft 86 2. The movement (see Fig. 6). This engagement,between. the catch 84 and the hook 85 is permitted by the Atail piece 86of the hook bearing on the flattenedl part of the hub 87, fixed to the.shaft of the wheel 73 the distance of one toothA does not causesuliicient movement of the hook 85 to liberatethe le.- ver 82 and' dropthe pawl 81 upon the wheel,

' and therefore any. numberV of quick movements of the impelling pawl 80merely produce quick back andforthmovement of the l wheelv 73.

pelling pawl 80. For this purpose I prefer to. employ the followingmeans: Upon 'y a shaft 88 there is fixed a lever 89, to the outerextremity o fwhich is pivoted a framework 90 carrying a pair of inertiawheels 91 fixed to a short shaft 92 resting upon the inclined track 93.These wheels 91 are held near the upper end of the track 93 by the arm94 fixed on the shaft 95, to which is also fixed the lever 79 whichcarries the impelling pawl 81. Thus each time the impelling pawl 81 isdepressed the wheels 91 begin to roll slowly down the track 93, andwhenever the -pawl 80 rises the arm 94 causes the wheels to V slidequickly back up the track 93. If the impelling lpawl 80 be depressedlong' enough, the wheels 91 will roll down far enough to permit ftheframework 90 to hit the lever 96. This lever is fixed to the revolu'bleshaft 86 to which the hook 85 is fixed. This action pushes the hook 85away from under the catch 84, thus releasing the pawl 81 and permittingit to fall upon the wheel 73. After this, as the wheel progresses stepby step under the linfiuence of the impellingpawl 80, the catch 84 doesnot at any time rise high enough to rest upon the hook 85, which,moreover, is held out of engaging position by the rounded portion of thehub 87. It follows therefore that, whether the forward impulses followeach other lquickly or with intermediate pauses, the wheel 73'will moveforward until the inclined tooth 97 comes in contact with the pawl 81.The inclined face of said:

'tooth' will cause the lever 82 and pawl 81 to move laterally so as torelease the wheel. The spring 74A (see Fig. 6)v at once returns thewheel to normal, at the end of which re-- turn movement, the liftingcatch 98 on the wheel 73, acting upon the inclined forward face of thelever 382', raises the catch 84 onto the hook 8 5, and the inclinedpin99 on the wheel causes return lateral -movement whereby the pawl 81 isrestored to the plane ofV ped in some cases, but, where a wheel withmany small teeth is used, I have found it advisable to use theconstruction shown. It will thus be seen that, by beginning with a longimpulse the wheel 73 may be progressed any predetermined number ofteeth, pauses being made at any desired intervals. The object of theentire freein device is to cause the opening of a norma ly closedcircuit at intervals selected at will by making pauses or long impulsesat proper intervals. For this purpose a iixed contact piece 100 isconnected to the frame of the machine, which is itself connected to thebinding post 101 (see Fig. 10). A movable spring contact 102 is fixed toan insulating piece 103 on the shaft 88 which turns with the lever 89.The tension of the spring 102 is such that it does not actually leavethe contact 100 until the wheels 91 have rolled down the track 93 a.distance corresponding to a prearranged in- 'terval of pause duringdepression of the impelling pawl 80. The movable spring terminal 102 isconnected by la fine iexible connection 104 to the insulated bar 105,connected by wire 106 to the binding post 69 (see Figs. 6 and 10).

In Figs. 8 and 9 are shown certain minor details of improvement. One. ofthese is the guide piece 107, lprovided with two upwardly extendingarms, ,between which plays the lower or working end of the impellinglever 80. These arms serve to control the movementsof the lever withrelation to the teeth of the wheel 73, yand their position can beaccurately 'adjusted in any given instrument by means of the screw 108,upon which the guide piece is pivoted. The pawl 8O is pivoted to thelever 79 as shown in Fig. 9, andv is provided with an arm 109- "7 3withy many ne teeth is used.

In operating the system so far described in connection with selectivestations signals of the type above referred to, any one or all of thestations on the line may be called successively by oneoperation.

Supposing it were desired to call stations 1 and 4, for instance, and toleave all other stations undisturbed. The operator will first pushforward lthe two keys numbered l and 4 and no others and then turn thehandle 22 as far as itwill go to the right and release it, The mainspring 52 revolves the shaft 57,-the arml 58 and the toothed wheel 18.During movement of the clockwork, the cir-'- cuit-closing positions ofthe keys 1 and 4 are preserved by the armature 45'being attracteration.

ed by the magnet belonging'to the group to which these keys belong. Thecircuit of this magnet is closed by upwardmovement of the sliding rod51," whereby Contact is l the finger 19 so as to produce the firstcontact .at 12, 13. At the moment these contacts occur current passesfrom battery 11 by wire 28, machine frame,` contacts 13, 12, wire 29, tomagnet 75 iii the freeing device, and back to battery 11. rlhe impellingpawl .8O

4 is thus depressed, and the depression is prolonged so as to produceaction of the retarded mechanism which trips the hook 85, by thefollowing means. Contact between the arm'58 and the spring-jaw (3()closes a cirf cuit starting from battery 118, bywires 112 and 28, toshaft l57 and arm 58, contact (30, wire 61, wire) l--t and wiresconnecting all the springs 10, by springs 13, 12 at the set key, wire67, post (i5, magnet 31, post (i6, wire (i8, post (Si) on the freeingdevice,`

contacts 102, 100, post 101. and back to battery 113. The 'magnet 31,being thus energized, acts by armature 32 and finger 34 to arrest theclockwork, so that a prolonged contaetis prmluced at 12, 13, thuspermitting the wheels ill iii the freeing device to roll down the trackill-l far enough to trip the hook so as to prepare the freeing device7'for progressive movement of the wheel 73, At the saine time, or alittle later, contact is broken at 10() and 102, thus deenergizingmagnet fil, ,and permitting the clockwork tocontinue its forwardmovement. ln the nieaiitiinta a branch circuit is closed from battery14, by wire 28, machine frame, contacts 115, 12, wire 29, fwii'e 30,relay 1l, and back to battery 14. This '.'loses the niain line circuitto all tlieselective calling instruments, and the interval being aprolonged one,A all of said instruineiits are. prepared in a well knownmanner for forward movement;I and appropriate opwork now brings the arm58 into contact with the first spring-jaw 59, and current flows frombattery 111-, by wire 28, arm 58, contact 59, wire 114springs 41, 4,0,ofkey No. 1. by wires connecting all springs 40 to springs iii and-l2,`by wire (S7, to magnet 31 as before and back to battery. At thesame time prolonged action of the freeing device magnet 75 takes placeas before due to circuit through lil and 12 and the wheel 78 movesforward another tooth. A long iinpulsc is again sent over the line, andthat selfurther movement of the clockleetive instrument which isarranged to operate on prolongation of the first impulse produces asignal. 'T he clockwork being released by action of the freeing deviceas bcfore, contact occurs successively at the second andthirdspring-jaws 59. connected as shown to springs 4:1 at keys 2 and 3,but, as said keys have not been tilted,- the magnet 31 is notenergizedand thc only result is pro,f: ,1"essA forwardbyonemore tooth of thewheel'73 in the freeing-device7 and of the corresponding wheels in allthe selective instruments along the line. lVhen the "aian-58-reaeliesthefourth contact 59, the

arrester magnet 31 comes again into play These are owing to the positionof key No. 4, andthe operation above described for number 1 is repeated`The enti-re revolution of the arm 58 is completed, and, just as the arm58 reaches the last contact 59, the 4opposite end of said arm reachesthe notch 63, whereby circuit is broken through all the magnets 46 whichhappen to be energized. This .releases all the tilted keys, 'which atonce returnlto normal, in preparation for another operation. The arm 58then advances to the nornial position shown, the same being in contactwith the ring 62 preparatory to again u'sing the entire apparatus. Inthis position the arm remains, the pin24 having struck the arm 23. 1

It will be seen that the number of teeth on the wheel 73 in the actualfreeing `device" shown is considerably greater than the number ofcontact points-59. In practice the number of teeth counting from normalposition of the Wheel 7 3 around to the beveled tooth 97 should be equalin number to the contacts 59, but a fewer number of the latter contactshave been shown in Fig. 10 as it would unduly complicate .the drawing'tosli-ow therein more than two groups or sectional units;

The use of the cset key is to bring all 'selective instruments on themain line with certainty to normal or initial position when there is`reason to suspect that one or more of them have been accidentallydisplaced. This may be done without operating any signal as followsz-The set key is tilted, being held by itsl Vappropriate magnet 4Gasbeforc described.

'lhe handle 22 is then turned o1' released as before. As the arm 58reaches each springjaw in its path, there is no action of the arrestermagnet 31, because its circuit ris brokenr at 42, 13.V The closures ofcircuit produced at 12. 13 are therefore all quick ones, 21nd in caseany selective instruments on the line are vaccidentally advanced at thecommencement of the operation beingf'iescribed, such instruments arecarried trithe` enel o f their allotted movement Where-theyfautomatically.return-to normal.4 Any fur- 'ther impulses reaching suchinstruments after return to `normal'will not cause further progressionin them, owing tothe fact Ithat a prolonged or retarded initial impulseis necessary to svtart them.

'Just before the end of the operation above last "described the arm 58again reaches the notch', and the set key is released by deenergizingits magnet, as above described in the case of normal operation.

Many changes may be made in constructions above described withoutdeparting from my invention and I do not limit myself to details hereinshown and described.

Having described my invention what I claim as new and desire to secureby Letters Patent is:

'1. A device of the class described comprising in combination anautomatic sender adapted to normallyproduce a succession of rapidelectric impulses, an automatic arrester adapted to interrupt the actionof said sender, a group ofkeys adapted to control the operation of saidarrester, and an electro-magnet associated with said group and adaptedto hold any plurality of said keys in a predetermined position to whichthey may be successively moved, substantially as described.

2. A device of the class described comprising in combination anautomatic sender adapted to normally produce a succession of rapidelectric impulses, an automaticlarrester adapted to interrupt the actionof said sender, a number of groups'of keys.

adapted to control the operation of said arrester, anv electro-magnetassociated-with each of said groups andveach adapted to hold in apredetermined position to which they may be successively moved any plui'rality of its own group, and an electric circuit for controlling saidmagnets and having a separate branch including the coils of each magnet,substantially as described.

3. A device of the class described com-- prising in combination anautomatic senderA adapted to-normally produce a succession of' rapidelectric impulses, an automatic arrester adapted to interrupt the actionof said sender, a group of keys adapted to control the operation of saidarrester, an electromagnet associated with` said group and adapted tohold any one of said keys in a predetermined position, a circuit forsaid magnet, and an automatlc circuit breaker in'said cu'cuit adapted tomove with salda sender, substantially as described.

5. A device of the class described lcom-llo prising in combination anautomatic sender adaptedto normally produce a succession of rapidelectricl impulses, .an automatic arrester adapted to interrupt theaction of said sender, a group of keys adapted to control the operationof said arrester, an electro-magnet associated with said group andadapted to hold any one of said keys in l i vapredetermined position, acircuit for said magnet', a rotary arm adapted to move with said senderand a plate along which said arm moves when rotating, said arm and plateboth being in said magnetcircuit, and said plate being shaped so thatsaid arm breaks contact with it at one point, substantially asdescribed.

6'. A device of the class described comprising in combination anautomatic sender of rapidly recurring electrical impulses, an automaticarrester therefor, a group of keys and corresponding circuit closers, anelectro-magnet for holding said keys, a series of contact pointselectrically connected to said circuit-closers, a contact plateelectrically connected to the coils of said electro-magnet, and acontact arm adapted to move with said sender 'and placed so that one ofits ends sweeps over said series of contact` points and its opposite endsweeps along said contact plate, substantially as de' scribed.

7. A device of the class described comprising in combination a toothedwheel intended to be advanced a predetermined dis,- tance, means forreturning the same to normal, a retaining pawl for said wheel, a pivotedlever thereformounted so as to be movable laterally', means on the wheeladapted to move said. lever laterally, means on the Wheel adapted toac't upon said level' to raise said pawl yand lever when the wheelreturns to normal, and a second means on said wheel adapted' to movesaid lever and pawl laterally toward said wheel, when the latter returnsto normal, substantially as described.

8. A device of the class described comprising in combination a toothedWheel intended to be advanced a predetermined distance, means forreturning the same to normal, a retaining pawl for said wheel, a pivotedlever carrying said pawl, a hook adapted to engage said lever, and meansmoved directly by said wheel for controlling the position of said hook,substantially as described.

9. A device of the class'describcolrF prising in combination a toothedwheel intended to be advanced a predetermined distance, means forreturning the same tonormal, a retammg pawlfor said wheel, a plvotedlever carryingsaid-pawl, a hook adapted to engage said lever and havinga tail pieceextending past the shaft of said Wheel and a attened hubfixed to'said wheel and souplaced as to control the engagement of saidhook With said lever on rotation .ot said wheel, substantially asdescribed.

10. A device of the kind described comprising in combination anautomatic sender adapted; to normally produce a succession of rapidelectric impulses, an automatic arrester adapted to control theoperation of said sender, a group of movable keys adapted to control theoperation ofsaid arrester, and a single means associated 'with saidgroup and adapted to hold any plurality of said keys in a predeterminedposition to which they mayl have been successively moved.

11.- A device of the kind described, com prising in combination, anautomatic sender -adapted to normally produce a succession of rapidelectric impulses, an automatic arrester vadapted to control theoperation of said sender, a groupot' movable keys adapted tocontrolhth'e operation of said arrester,

' a single means associated with said group and adapted to hold anyplurality of said keys in a predetermined position to which they have-been successively moved, and mea-ns for rendering said last named meansoperative, controlled by the movement of any key.

v12. `A device of the kind described comprising an automatic senderadapted-to normally produce a succession of rapid electric impulses, anautomatic arrester adapted to control the operation of said sender, agroup of movable keys adapted to control the operation of saidnarrester, and a single means associated'with said group and adaptedtohold any one or plurality of-said keys in a predetermined position towhich rthey may be successively moved.

1B. A device of the kind described, comprising in. combination, anautomatic sender adapted to normally produce a succession of rapidelectric impulses," an automatic arrester adapted to control theoperation of said sender, a group 'of movable keys adaptedito controlthe operation of said arrester, a single means associated with saidgroup and adapted to hold any plurality of said keys in a predeterminedposition to which they may be successively moved, and means forrendering said last named means operative, controlled by the movementofany key.

14. In a device of the kind described, a plurality of switches, a keyfor each switch, an electro-magnet for holding any plurality of saidkeys in a determined position to which they may be successively moved, acircuit for said magnet, and ameans for controlling said circuitcontrolled by the movement vof any one ot said keys.

plurality of keys, an armature connected to each key, a magnet common tothe armatures, a circuit including the magnet, a switch for the magnetcircuit adaptedA to be mechanically operated l*by any one of said keys,and Aan independent circuit controlled by each of said keys.

17. 1n a device of the kind described, a

vplurality of keys, an armature connected to each key, a magnet commonto the-armatures, a. circuit including the magnet, a switch for themagnet circuit adapted to be mechanically operated by any one of saidkeys, and automatically operative means for breaking the magnet circuit.

18. ln a device of the kind described, a plurality of keys, an armatureconnected to each key, a magnet common to the armatures, a circuitincluding the magnet, a switch for the magnet circuit adapted to bemechanically operated by any"one of said keys, and manually operated-means for breaking the magnet circuit. V

19. .ln a` device' of the `kind described, aV

plurality of keys, an armature connected to each key, a magnet common tothe armatures, a circuit including. the magnet, a switch for the magnetcircuit adapted to be mechanically operated by 'any one of said keys,automatically operative means for breaking the magnet circuit`and-manually operative means for breaking' the magnet I' circuit.

20.' ln a device of the kind described, automatic sender ot' electricalimpulses, automatic arrester therefor, a group keys and correspondingcircuit closers, lectro-magnet for vholding said keys, a series ofcontact points electricallyconnected to said circuit closers` a contactplate electrically'connected to the coils of said-electro-magnet, andhav-ing. a cut-out portion, and a contact arm adapted to move with saidsender. and placed so that one of its ends sweeps over said Series ofcontact points and its vopposite end sweeps along said contact plate,excepting at the cut-out portion, substantially as described.

21. ln a device of the kind described, a plurality of keys, armaturesmoved by the keys respectively, a magnet common to the armatures, acircuit including the, magnet, a switch for the magnet .circuit movableupon movement of any key, and a spring circuit closer controlled by eachkey respectively, said springs urging said several keys to movement.

22. ln a device of the kind described, an

ofv

automatic sender adapted to normally produce a succession of electricalimpulses, an automatic arrester adapted to interrupt the action of saidsender, a group of keys adapt- 'ed to control the operation of saidarrester, a

spring circuit closer controlled by each key respectively, said springsurging their several keys to movement, an electro-magnet associated withsaid group of keys, and

adapted to hold any one of said keys in a predetermined position, acircuit for said magnet including a movable contact, and a movablemember operatively related to said contact and movable by any one ofsa1d keys.

23. A device of theclass described, comprising 'in combination anautomatic sender adapted to normally produce a succession of rapidelectric impulses, an automatic arrester adapted to interrupt the actionof said sender, -a number of groups of keys adapted to control theoperation of said arrester,'an electro-magnet associated with each ofsaid roups and each adapted to hold in a pre etermined position to whichv they may be successively movedany plurality of keys of its own group,an electric circuit for controlling said magnet and having a separatebranch including the coils of each ma et, substantially as described,4and automatically operative means for controlling said circuit.

24. A device of the class described, comprising in combination anautomaticsender adapted to' normally produce a succession of rapidelectric impulses, an automatic arrester adapted to interrupt the actionof said sender,y a number of groups of keys adapted to control theoperation of said arreter, an electro-magnet associated with each ofsaid groups and each adapted to hold in a predetermined position towhich they may be successively moved any plurality of keys ,of its owngroup, an electric circuit for controlling said magnet and having aseparate branch includingthe coils of each magnet, substantially asAdescribed, and manually if operated means for controlling said circuit;

25. A device of the class described, comprising in combination anautomatic sender 'adapted ,to normally produce a succession of rapidelectric impulses', an automatic arrester adapted to interru t theaction of v said sender, a number o groups of keys adapted tok controlthe operation ofsaid arrester, lan electro-magnet associated with eachof said groups and each adapted tov hold in a predetermined position towhich they may besuccessively moved any plurality of keys of its owngroup, an electric circuit for controlling said magnet and having aseparate branch including the coils of each magnet, substantially asdescribed, automatically operative means for controlling said circuit,and manually operated.

means for controllin said circuit.

l 26. ln 'a device o the kind described, a n

to each key, a slidable rod extending past 80 each of said keys andhaving a plurality of fingers, one for engagement with the aforesaidportion of each key, a magnet common to said armatures, and a circuitfor said magnet including a movable contact operatively related to saidrod.

In witness whereof I aflix my signature in the presence of-twowitnesses.

EDWIN IR. GILL.

Witnesses:

CURTIS P. GATELY, E. A. HENNESEY.

